US3743733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating bronchial asthma
Assignee: Sandoz AG
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Filing: 1971-07-26
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Granted: 1973-07-03
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Expires: 1991-07-26
Abstract
Abstract SUBSTITUTED QUINAZOLINS, E.G. 3A-P-ANISYL-1,2,3,3A,4,5HEXAHYDRO-PYRROLO (1,2-A)QUINAZOLIN-5-ONE, USEFUL IN THE TREATMENT OF BRONCHIAL ASTHMA.
Inventors
- 👤 W Houlihan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:44
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/007; A61K9/0073; A61K9/0078; C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; C07D487/00; C07D487/02; C07D487/04
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |